What is the main function of a crime scene investigator?

The main function of a crime scene investigator focuses on collecting and preserving evidence. This role is critical in ensuring that any physical evidence found at the scene is handled properly to maintain its integrity for future analysis. The process typically involves documenting the scene through photographs and sketches, collecting trace evidence, and securing items that may provide crucial information about the crime.

Collecting and preserving evidence is foundational for building a case, as it helps to establish the facts surrounding the incident. Proper procedures must be followed to avoid contamination or loss of evidence, which could compromise the integrity of the investigation and the potential prosecution of any suspects involved.

While interrogating suspects, presenting findings in court, and patrolling the area may be part of the broader law enforcement process, they are not the primary responsibilities of a crime scene investigator. Their specialized training and focus ensure that the primary task of evidence handling is conducted correctly, providing a reliable basis for further investigative actions and legal proceedings.